"ultimate privacy" is correct and usable in written English.
You can use it to refer to the highest level of privacy, for example: "Everyone needs a sense of ultimate privacy in their lives."
It was the ultimate privacy grab, better even than a blood sample from every living person on the planet.
"Staying in spacious cottages spread out along one kilometre of private sandy shoreline, guests will experience tranquillity and ultimate privacy.
This month I can top all previous examples with the ultimate privacy prize of the homeworking lady - the opportunity to navigate the first trimester of a pregnancy without anyone suspecting a thing.
High-profile people and celebrities looking for ultimate privacy are also apt to take over a resort.
What to Do: Decide which beach to frequent: Jetties for families, Ladies for scenic dunes, and hard-to-reach Coatue for ultimate privacy.
Stay in the two-bedroom cottage for ultimate privacy with a full kitchen, 1 1/2 baths, and spacious living room with gas fireplace.
There are four bedrooms, each with an en-suite bath; in addition, the master suite takes up an entire floor and, naturally, offers his-and-hers baths, for the ultimate in privacy.
You know you're getting the ultimate in privacy when your resort is on an island you can only reach by ferry and you can't take the ferry unless your name is registered.
The classic resort (rooms are little bungalows for the ultimate in privacy), is offering a Suite and Sparkling Valentine's Weekend package that's $3,400 per couple, which includes the limo ride to and from San Francisco or Sacramento, your stay in a one-bedroom premium suite -- plus loads of fun activities.
It would be very easy to regard this as the ultimate threat to privacy and personal freedom.
At the same time he journeys into that cloudy terrain of the unconscious to probe the uncanny stranger within, that ultimate guarantor of privacy.
